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1 WH(GJ-WH)室外厚型钢结构防火涂料1.1概述WH(GJ-WH)室外厚型钢结构防火涂料(见图1)是耐火极限大于2 h的钢结构构件的防火保护功能性涂料。图1 WH(GJ-WH)室外厚型钢结构防火涂料1.2产品特点该防火涂料涂覆于钢结构表面,遇火灾高温时能有效地阻止热量传向基材,形成一层防火隔热层,使钢基材在火灾中受到保护,其强度不会在火灾的高温作用下急剧下降而导致建筑物垮塌。1.3适用范围该防火涂料能对钢构件起到高效的防火隔热保护作用,提高其耐火极限。1.4工作原理加入各种本身不燃的无机填料,其热导率低,可延滞热量传向被保护的钢基材的速度。涂覆在被保护基材上的涂层本身不燃或难燃,对基材起屏障和防止热辐射作用,避免了火焰和高温直接进攻被保护的基材。1.5主要性能参数
1 WH (GJ-WH) Outdoor Thick Steel Fire Resistant Coatings 1.1 General WH (GJ-WH) outdoor thick steel fire retardant coatings (see Figure 1) are fire protection functional coatings of steel structural members with a fire resistance greater than 2 h. Figure 1 WH (GJ-WH) outdoor thick steel structure fire retardant coating 1.2 Product Features The fire retardant coating on the steel surface, in case of fire at high temperatures can effectively prevent heat transfer to the substrate, forming a layer of fire insulation, so that Steel substrates are protected from fire and their strength does not collapse sharply as a result of a sharp fall in the temperature of the fire. 1.3 Scope The fire retardant coating steel components can play an effective fire and heat protection, improve its fire resistance. 1.4 How it works Adding a variety of inorganic fillers that are not inherently flammable, their low thermal conductivity can retard the rate of heat transfer to the steel substrate being protected. The coating applied to the substrate to be protected is itself non-flammable or flame retardant, acts as a barrier to the substrate and prevents heat radiation, and avoids the direct attack of the protected substrate by flame and heat. 1.5 The main performance parameters